Portland Wednesday weather: Clouds burn off quickly to mostly sunny skies; high 75 – OregonLive

Portland Wednesday weather: Clouds burn off quickly to mostly sunny skies; high 75  OregonLive

Portland will see mostly sunny skies Wednesday and Thursday before rain returns Friday. South Santiam River.Rosemarie Stein/Staff

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Seasonable temperatures and mostly sunny skies continue Wednesday in the metro area.

Some northwest Oregon and southwest Washington locations are a bit murkier this morning as Astoria airport recorded a trace of rain before 5 a.m., and the Longview/Kelso area is seeing plenty of cloud cover. The National Weather Service says any clouds that make it into Portland should burn off quickly for mostly clear skies. The high will be about 75 degrees.

The weather service also mentioned chances for low relative humidity in the Willamette Valley, possibly down to the 15-25% range. Humidity was low Tuesday as well. Use caution with any outdoor ignition sources.

Thursday should look a lot like Wednesday with some increase in the mid-to-high level cloud cover. A system along the U.S./Canadian border will slowly sag southward and begin adding to the cloudiness. The high will again be about 75.

A cold front is expected to move across the metro area beginning Friday. Some light showers are possible after about 11 a.m. Otherwise, the day will be mostly cloudy with the high dropping to around 70 degrees. Rain chances will gradually increase into the evening.

Currently the weekend looks wet, with temperatures dipping into the 60s.